Showcase | Accident Scene Investigation with Drones Emergency Response PROJECT
The Royal Canadian Mounted Police staged a car accident scene and then mapped it using drones and photogrammetry, in order to develop a protocol for accident/crime scene analysis
KEY BENEFITS
• High-accuracy measurements, precise to 1 cm • Fast response time with efficient data capture • Easy-to-use without photogrammetric knowledge / Views and details from any angle • Scene documented with both images and reconstructed model
Accurate measurements on the 3D point cloud
Data Acquisition HARDWARE & FLIGHTPLAN
Draganfly Draganflyer X4-ES drone with SONY QX-100 camera Aeryon Labs Aeryon Scout drone with Photo3S camera Grid flight plan with high overlap and circular flights to obtain oblique images for close-up view
TIME ON SITE
Around 15 minutes
DATASET
Draganflyer: 212 images at 0.9 cm GSD Aeryon Scout: 225 images at 0.6 cm GSD
Project Outcome DELIVERABLES
• 3D point cloud for scaled and georeferenced accident scene documentation • Digital surface model • Orthomosaic
PROCESSING TIME
Around 2 hours per data set
ANALYSIS
• Reference measurements between the evidence markers were taken by measuring tapes. With the use of GCPs, the 3D densified point cloud result provided around 1 cm of accuracy without missing any details in the reconstructed scene • The deliverables and quality assessment report produced by the software could potentially be submitted in court as evidence for real case scenarios
Royal Canadian Mounted Police member flying the Draganflyer X4-ES at the accident scene
Photogrammetric point cloud of accident scene
Laser scanned point cloud of accident scene
Close-up picture of staged accident
Client Reference SHOWCASE COURTESY OF:
Royal Canadian Mounted Police Discover Pix4Dmapper for free on www.pix4d.com
Pix4D SA EPFL Innovation Park Building D 1015 Lausanne Switzerland
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